Electrical lamp socket



` March 26, 1935. R. PoPP 1,996,028

ELEGTRIGAI.; LAMP SOCKET FileqFeb. 2, 1951 Mln t x .f 1mm W11' A i .A'further object provdea new Patented Man-26, 1935 i-PATENT l corporation-of Indiana. e Application FebruaryA 2,

regisseertare??-. i

.--.4.c1aim..A (or.17a- 354)v r Y yMLV invention relates o endfmerererteulerly to a switoh-fereee1eetrie .lmpfsocket. .l fini.. lAn Object. of the Present invention is lto pro- .vde a new and improved socketiswitch assembly. 1 A further Yobject is to provide a socket switch assembly in' which the 'Screw shell is permanently .securedr to thegbase in a simpleandinexpensive mnner and particularlyby the horeshoeltermin proved supportingm'eans for the center contact vby one of the frame elements.

'vof'.avsocket switch', A further object'isto provide adevce in which the center contact is securedv t0 the switch frame A further object 'is to provide a simpllfledand 'effective arrangement of the elements of fa [socket Other. objects and advantages'fwill' appear fas the descriptlonjproceeds. u l j Electrical lamp sockets are used. so extensively at thev present time'- that improvementspwhich result in even a small saving. the cost of*r a vsingle unit, 'mount to 'substantialvproportions j when the socketsY are madefin large quantities.

Heretofore it yhas been a common rpracticeto "mount a socket switch onakpor'celain base "and assemble the switchfmechanism and' screw shell of the socket on the-'base byV means of a pair-of -long screws passing through* theporcelain base and screw shell into the horseshoe terminal. n l.

Infaccordance with the general features of I vthe presentiin'vention, .the .screw rshell 0f-the socket is permanently attached to an insulating plate and the switchV kmechanismM is `,supported ,between thsvplate': and a second insulating plate spaced from the rst plate by a pair of Separating posts which also `form a part of the circtand v ,rests .at` oneend' against the VU ,shaped member 1 Fig.4-is a sectional view'takeonlline' 4-4 of Fig.2, e

Fig.r 5 is al fragmentary section taken online 5-5 of Fig. 4, y

Fig. 6 is a perspective detail yview of the horseshoe terminal,

Fig. '7 is a perspective detail view of the pawll for actuating the ratchet wheel, and

. A, .The a-SWltCh-'mech'anisni mounted between a extend through-.the platesaand'are upset at their :upperandloweraends .to clamp thepletes and'` hold-them imposition. 1. .The 'plate 13 has a screw lshell.f1.6-rmounted.; thereonI having` an lirlturned flangerl'. lying against the-face o theplate.

Withlnthe screw shellv and-overlyingflanee 17 is v .Y

ahorseshoe-:terminal lhaving lues; 19, .21, and

1,22; which'arebent atgrislfit angles tothe plane 0f the horeshoe terminal and Vare, Yinserted through ppeningsin the flange ofthe screw shell and slots 23; 24ancl. 2 5 in `plate 13.` The projecting por.

tions of lugsel and v21are thenfbent iiatagainst the .;upper taceoi the,` plate to securely Clamp thetscrewshellto the plate,v as .shown in Fig. `5-

provided with a= screw 2,6 Afor-1corniceting. the

.horseshoe terminal and screwhell man electric circuit; This .provides `a simple .and j effective Ameans for securngthe screw shellto the insu -lating plateand forms a'unit of these monitors.k 'AAJ shaped'fmember y2 '7gis supported between r-platesziz and 13 and haszproiections adapted t0 .extendintotheseplateszto h .oldthe member in"- l 3o 28;.and hasla round-collar. 29fattached to itsend upon' which fav lever .31y is iadaptedtorock when 4atension is appliedztoechain l32...Y Lever 31 is* iconnected to a steml 33 by a universel connection; whereby Ythe rockingk offlever 31r in Aany direction willfpullfthe stem to the right as viewed in Fig.'

position. This member is reduced as .shownA at 4. Stern 33 is provided with a yhead Llwandgcarf nesrfa UshapedpaWl t3: having arms v44: and 45.

Surrounding stem: 33y is. a helical spring fl'lwhich 27 whilesitsiother endrestsagainst pawl 43 hold? ingfthepawi and .stem in kextended position,y as

shownqin Fig; 4. fAesquare shafteghaving re- The slot in arm 44 is. of such length that when the pawl is moved to the right. as'viewed in Fig. 4, the end of the slot will engage a tooth of the vratchet vWheel and rotate the wheel as Well as the shaft ina clockwise direction. Upon release of 2.0' -Lug V22- iis-allowed tofremainupstanding and is the rrpullappli'edto chainV a2, Vspring 33 returns VVVthe `pawl to its normal positionv and theend oi'V n arm 44 is bent at angangle to facilitate its riding over the teeth of the ratchet wheel upon its retation, of Ithe ratchet wheel. Y Y j: 1 Upon the upper end of the square shaft a con- 1 tact carryingmember 35 'of any suitable insulatl10V fing material is mounted so as to rotate with thev shaft. vThis vcontact carrying member has, a?-

squareY opening extending partiallyrtherethrough v Y the invention' herein described and illustrated is l and a circular lopening extending from the end` of Y Y Y 'K thesquare opening completely throughthememe'.Y 15 ber so that whenthe memberismounted uponV 1 shaft A34 it will be held in position against -plate v12 onk the upper end of the shaft.:The contactV carrying member has a pluralityof teethwhich `contact surfaces turnedrup' so as-to over-lie and provide bridging faces uponth'e 'shallowteeth V`vThe bridging contact member is illustrated'lnore i g'fully in Fig. 8 and consists yof vall ar'lnula'rv portion portion agplurality of arms'extend to the contacting portions 'overlying the. `shallow` teeth. .The-"annular" portion and; arms'of this i bridging contact member inf-the assembled .de vvi'ce lie between Vthe Vcontact 'carrying member- VEach of the 'posts 14 and'l Acarriesa:"statiCanary fcontact member 37 .ofiresilientmaterlal These contact members are so bent'as to'hav'e inwardly ly straight portion,fwhichis're-bentgupon itselfv 'to give additional` resiliencyl and` atthe end of a right anglef l These right angle -portions are se# cured in slotsprovided in posts l4fandv 15. When .Y ing member to thef'shallow contactrocarrying teeth, the "drop is .fsmallland the tension ofthe Y. -springs is only" slightly released,:thus preventing` l ire-bound vofv the stationary icontact members whenthey strike the'fcontact carrying teeth;l In

n l56 yone-position ofthe movable contact member both` of the stationary contact members willrest 'upon insulating teeth and in anotherposition "of the Y ,'movable contact'member both of-the stationary cntactf'lmembers will rest upon and be bridged lbyuteeth'having a conducting face, in which4 po` fsition posts 14 and 15vwill be electrically intercor'lrlecrtedff Y .'f gi Y The post 14fis providedwith* a screw'38Y for electrically connecting this-'postto: anrelectc circuit. 'The post,v l5 extends vthrough insulating plate 13 into the opensidel'of the horseshoeV ter- Y Lrninal'andhassecuredthereto an arm39, which passes -lthrough'the yopenside of the horseshoe l rlamp isfpl-acedvin the screw shelland .apair` of vleadsfroman electricY circuit 'arecOnnected-to `'-from lug V22 through the screw'shell to the lamp "while the other leadV goes from post `14 through 1,996,023 l ...il ...zii l nism to post 15 and thence to center contact 41 '364'. surrounding shaft 34,'"and fromthis "said plates by Saidsecond post.l

curved `contacting portions lyingv substantially 'opposite each other-for engagingV thev movable` contact carrying member and have a substantiallug 22 and'p'o'st 14, one of the leads goesdirectly and to the lamp. This forms a sturdy andrugged construction, which v may' be convenicently y v and economically assembled.1

The mechanism for operating the'switch just described is more Vfully set forthin *mycopend-I ing application, Serial #463,141, ledJune 23, 19.30.1which issuedr Septemberf27-,- ;1932 as Pat- `It willibe understood that the lembodiment o mere1ya'convenient Vform ofthev invention. Many changes and mod iiications may be made Vtherein Vwithout.,departingfifrom the spiritand scopero'f theappended claims. 1 What I claim as new and desire to protect by are alternatelyrclit deep and shallowand a bridge; Y *ingv contact member 364 is provided,V having its,V1

Letters Patent of theUnited States'is:`

l. In afswitch o'f the'character"described,l a

and a plurality offposts for positioning said plates,

means fol-connecting ya conductortonneoifsaid r posts,v ai silvitclrV mechanism ,for electrically 'conf -i nectineanddisconntngaid.90st ndscend post; Vandj'acenter contactattached"tofone of Y *712,- Inffa 4:switch` of jthefcharacter!descifibed a i pair ofinsulating "platesga plurality of pos positioningsaidfplates, "meansfor connecting a Y: 'cndutorwoneojf salam-sts, aswltcthfme'crhanism 'supported betweeny 'said plates fior' velect f feat No; 1,879,882., The presentinventloh is directed more particularly to the `improverrlentspointed out in theA accompanying claims. 1

e I 20 1 A switch trame, including a pair'of insulating plates callyc'onnecting and disconnecting said postfalld f a, f SetondV Pesi e .centermitet having @nl "erm jsecuredto Vsaidsecond post, a screw'shellrnounted von one joifsaidplates, a horseshoe'fterminalihaving a plurality` Of lugs, two'ot said lugsfbeivng bent over said'plavte to securefthe screw shelltllerveto, and a third lug havingimeans Vfor,connect'ir'ig `Va conductor thereto for' making electrical connec-` t A tion with screwI shelll.

- the stationaryfcontact member'sgi'l'A pass'trom 3' Inraswith of 'the thedeepv cut insulatednteethofth'e contact'carrya screw shell, a 'horseshoe terminal 'for securing `said screwshellto one o fjA said platesgtheV open swltehrrame,lncluding apar; or insulating' plates -and apl'urality'bf forpositioning said plates,

end ofrqneffof. Said pog'tg'and-,ajcenter-Contact Ahaving `:an arm lextendingginto the vopen side of said horseshoe --'term i na1 'of said' post. "f ,y

andfsecured to theyend 4..'In a.switcl'ifofnthe.cliaracterfdescrlbed,` aV

switch frame including'f'afpair of in'sulatingplates anda plurality ofipotstsfor-positioning said plates, g. a screwA shell, 'afhorseshoe terminal-fforse'cu'ring I vsaid `screw shell toene of said plates, the openside of said horseshoe "terminal "overlying" the =`elidof f fonelo'f'said posts, ,a centercontact having'"anfariilV extendingv into open, sidey iof the horseshoe tric circuit.

- -g y RUDOLE Pore: i' l,

to e 

